They are not affected by surrounding factors and processes， surface coating and double-sided coating is different but the thickness of single-sided coating， so the thin-walled pipe shall be galvanized. The zinc coating has strong protection and corrosion resistance.
vbuffalo The defects can be removed by grinding with sand wheel， but the remaining wall thickness must be within the allowable standard.
The rapid popularization and application of cold drawn ribbed bars and hot rolled grade III bars in China provides a good material basis for the development of welded mesh. The formal implementation of welding net product standards and application procedures has played a positive role in product quality and accelerating popularization and application.
CKedaniai Application of galvanized pipe
Bo Phosphorus: it can significantly reduce the plasticity and toughness of steel， especially at low temperature. This phenomenon is called cold brittleness. In high-quality steel， sulfur and phosphorus should be strictly controlled. On the other hand，Products Show low carbon steel contains high sulfur and phosphorus，Cincinnati20 fabricant de tubes sans soudureLe besoin d'entretien which can make it easy to cut， which is beneficial to improve the machinability of steel
Longitudinal welded pipe has the advantages of simple production and processing technology， high production efficiency， low cost and rapid development trend. The compressive strength of spiral welded pipe is generally higher than that of straight welded pipe. Narrow blank can be used to produce welded pipe with large pipe diameter and blank with the same total width can also be used to produce welded pipe with different pipe diameter. However， the welding length is increased by ~ compared with the straight seam pipe with the same length， and the production rate is low.
Polished stainless steel pipes shall be subject to internal inspection and strict manual selection by the steel pipe quality inspector through metal detector (or hydrostatic test)， and qualified products shall be packaged and delivered.
tIntroduction to product knowledge of alloy pipe:
GIt is also divided into general welded pipe， galvanized welded pipe， oxygen blowing welded pipe，Products Show wire sleeve， metric welded pipe， idler pipe， deep well pump pipe， automobile pipe， transformer pipe， electric welding thin-wall pipe， electric welding special-shaped pipe， scaffold pipe and spiral welded pipe.
MHigh quality brand Silicon; it can improve the hardness of steel， but the plasticity and toughness decrease. Electrical steel contains a certain amount of silicon，Products Show which can improve the soft magnetic properties
jXHowever， compared with plastics，Cincinnati20 fabricant de tubes sans soudureLe besoin d'entretien these pipes， like other metals， remain stable and will not be affected by high temperature.
Seamless pipe mechanical properties， easy processing， etc;
During the construction of building wall， cracks and hollows show that the construction materials are unqualified， the construction at the matrix junction is not in place， and the construction personnel are poor. The external wall plastering adopts electric welding steel wire mesh，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd but there will also be a backwardness of the market in a special stage， and after the backwardness of the market in stages， there will be a rapid decline in the moving average of the apparent consumption of galvanized pipe， welded steel pipe and so on.
HIn order to make the welded pipe have the required mechanical physical and chemical properties， in addition to the reasonable selection of materials and forming process， heat treatment process is often necessary. In addition， the mechanical， physical and chemical properties of aluminum， copper， magnesium， titanium and their alloys can be changed by heat treatment to obtain different service properties.
Because the zinc coating has excellent ductility， it can be formed by cold stamping， rolling， bending and so on without damaging the coating.
sbuffalo In order to ensure the welding quality of pipes， welders shall be trained， tested and qualified. In addition to the basic theory， the welder should consider the operation skills. The pipe welding process may include several postures of overhead welding， vertical welding and overhead welding (when the pipe cannot rotate). The size of current should be selected to take into account the formation of vertical welding and overhead welding (some pipes are not very large， and the current cannot be adjusted in the middle of one formation). In the process， the stability and formation of arc should be controlled， It can swing properly， and the forming shall be well combined with the necessary swing.
vKThe seamless pipe produced by the seamless pipe manufacturer is a long seamless pipe without any joints around and with hollow section. The thicker the wall of this product produced by the manufacturer， the higher the use value and economic value of this product. If its wall thickness is thinner， its processing composition will increase significantly， Secondly， the product technology produced by this seamless pipe manufacturer often determines its limitations.
The cold-rolled stainless steel pipe has the advantages of large yield coefficient， no expansion， the pipeline after cold rolling must undergo bright annealing， demagnetization， pickling， calibration and other procedures.